<template>
  <div class="loading">
    <div class="loader"></div>
  </div>
</template>

<script>
export default {
  components: {},
  data() {
    // 这里存放数据
    return {};
  },
  // 监听属性 类似于data概念
  computed: {},
  // 方法集合
  methods: {},
};
</script>
<style scoped lang="less">
.loading {
  position: relative;
  width: 100%;
  height: 100%;
  max-height: 700px;
  min-height: 150px;
}
.loader {
  position: absolute;
  top: calc(50% - 1.25em);
  left: calc(50% - 1.25em);
  width: 2.5em;
  height: 2.5em;
  transform: rotate(165deg);

  &::before,
  &::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    display: block;
    width: 0.5em;
    height: 0.5em;
    border-radius: 0.25em;
    transform: translate(-50%, -50%);
  }

  &::before {
    animation: before-ani 2s infinite;
  }

  &::after {
    animation: after-ani 2s infinite;
  }
}

@keyframes before-ani {
  0% {
    width: 0.5em;
    box-shadow: 1em -0.5em rgba(225, 20, 98, 0.75),
      -1em 0.5em rgba(111, 202, 220, 0.75);
  }
  35% {
    width: 2.5em;
    box-shadow: 0 -0.5em rgba(225, 20, 98, 0.75),
      0 0.5em rgba(111, 202, 220, 0.75);
  }
  70% {
    width: 0.5em;
    box-shadow: -1em -0.5em rgba(225, 20, 98, 0.75),
      1em 0.5em rgba(111, 202, 220, 0.75);
  }
  100% {
    box-shadow: 1em -0.5em rgba(225, 20, 98, 0.75),
      -1em 0.5em rgba(111, 202, 220, 0.75);
  }
}
@keyframes after-ani {
  0% {
    height: 0.5em;
    box-shadow: 0.5em 1em rgba(61, 184, 143, 0.75),
      -0.5em -1em rgba(233, 169, 32, 0.75);
  }
  35% {
    height: 2.5em;
    box-shadow: 0.5em 0 rgba(61, 184, 143, 0.75),
      -0.5em 0 rgba(233, 169, 32, 0.75);
  }
  70% {
    height: 0.5em;
    box-shadow: 0.5em -1em rgba(61, 184, 143, 0.75),
      -0.5em 1em rgba(233, 169, 32, 0.75);
  }
  100% {
    box-shadow: 0.5em 1em rgba(61, 184, 143, 0.75),
      -0.5em -1em rgba(233, 169, 32, 0.75);
  }
}
</style>
